Pipe coiler, for coiling 10mm copper pipe

This is a pipe coiler, it is made for 10mm copper plumbing pipe. The parts can be made from plastic but it could be flimsy if it is hollow (need 100% infill), ideally it should be metal or wood or both. I made this coiler to make this coper coil lamp. https://www.instructables.com/id/Copper-Coil-Voronoi-Lamp-B22-Bayonet/ made in FreeCAD 0.16